There is no such thing as an GPS_CMAKE_BOOL_ON options helper (should have been GPS_CMAKE_BOOL) so at the moment the GPS option solely relies on the presence or absence of libgps.so to turn on/off libgps support. I do not see any references to WITH_libgps in CMakeLists.txt or I would have just fixed it. Maybe it should use CMAKE_DISABLE_FIND_PACKAGE_libgps or similar instead like the WEBENGINE option.
Fixed. Thanks.
A commit references this bug: Author: tcberner Date: Sun Jul 14 07:27:06 UTC 2019 New revision: 506608 URL: https://svnweb.freebsd.org/changeset/ports/506608 Log: astro/marble: fix GPS option - Fix cmake toggle to disable GPS dependency PR: 239195 Reported by: tobik Changes: head/astro/marble/Makefile
MARKED AS SPAM